Useless Cock, the seasoned sadist, treats himself to a solo CBT session, focusing on the intense pleasure-pain of sounding. The servo-powered device hums to life, its mechanical arm precisely inserting a metal rod into Useless Cock's eager urethra. He gasps, his body tensing as the rod slides deeper, stretching his intimate passage. Useless Cock's cock throbs in response, leaking pre-cum as he endures the intense, pleasurable torture.